Length.
1 inch = 2.54 cm1 foot = 30.48cm
1 yard = 91.44cm
1 mile = 1.61 km
Area.
1 square inch = 6.45 sq.cm1 square foot = 92.90 sq.cm
1 square yard = 0.84 sq.m
1 acre = 4046.86 sq.m
1 square mile = 2.59 sq.km
Volume.
1 cubic inch = 16.39 cu.cm1 cubic foot = 0.03 cu.m
1 cubic yard = 0.77 cu.m
Capacity.
1 fluid ounce = 29.57 mL1 pint = 473.18 mL
1 quart = 1.14 liters
1 gallon = 3.79 liters